Texas Instruments MSP430F2111TDWR

Overview

MSP430F2111TDWR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2KB flash, 128B RAM, integrated Comparator_A+, Timer_A3 with three capture/compare registers, and a digitally controlled oscillator (DCO) calibrated to ±1% at 1 MHz–16 MHz. It operates from 1.8 V to 3.6 V and supports sub-1 µs wake-up from standby mode - ideal for battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430F2111TDWR datasheet, MSP430F2111TDWR pinout, MSP430F2111TDWR application, or MSP430F2111TDWR equivalent, key selection criteria include its 20-pin TSSOP (PW) package, -40°C to +105°C extended temperature rating, ultra-low active current (250 µA @ 1 MHz, 2.2 V), brownout detection, and on-chip emulation for JTAG debugging.

Technical Context

The MSP430F2111TDWR implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its basic clock module delivers ACLK, MCLK, and SMCLK from internal DCO (calibrated at 1/8/12/16 MHz), 32-kHz crystal, or external high-frequency source - all configurable via BCSCTL registers.

Timer_A3 provides three independent capture/compare channels supporting PWM generation, interval timing, and input capture with interrupt capability per channel. The Comparator_A+ module enables slope ADC conversion, battery monitoring, and analog signal threshold detection using eight selectable inputs (CA0–CA7) and programmable hysteresis.

Key Specifications

Pinout & Package

Package: 20-pin Plastic Thin Shrink Small-Outline Package (TSSOP), JEDEC MO-153 compliant, body size 6.5 mm × 4.4 mm, 0.65 mm lead pitch. Thermal pad not present - no thermal pad connection required.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.

Compared with MSP430F2111TDWR, the MSP430F2112TPW adds integrated ADC and serial interfaces at the expense of slope ADC functionality, while the MSP430G2553IPW20 trades industrial temperature rating and DCO calibration for broader peripheral integration - making MSP430F2111TDWR optimal for analog-threshold-centric, thermally demanding, and crystal-free designs.

Availability

MSP430F2111TDWR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, industrial temperature transmitters, and smart utility meter sensor interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MSP430F2111TDWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with emphasis on power efficiency, reliability, and system-level integration.

The MSP430F21x1 series targets ultra-low-power portable measurement and sensing applications, combining optimized 16-bit RISC architecture, intelligent clock management, and analog integration to maximize battery life without sacrificing performance.

FAQ

What is the maximum operating frequency of the MSP430F2111TDWR?

The MSP430F2111TDWR supports a maximum system clock (MCLK) frequency of 16 MHz when VCC ≥3.3 V and duty cycle is 50% ±10%. This is achieved using the factory-calibrated internal DCO, eliminating the need for an external high-frequency crystal while maintaining ±1% accuracy at 16 MHz.

Does the MSP430F2111TDWR include a hardware ADC?

No, the MSP430F2111TDWR does not include a successive-approximation (SAR) or sigma-delta ADC. Instead, it integrates Comparator_A+ with Timer_A3 to implement slope analog-to-digital conversion - a software-configurable method achieving effective 10–12 bit resolution using the on-chip comparator and timer resources within MSP430F2111TDWR.

What package type and pin count does the MSP430F2111TDWR use?

The MSP430F2111TDWR uses a 20-pin Plastic Thin Shrink Small-Outline Package (TSSOP), designated as PW package per TI's ordering nomenclature. It measures 6.5 mm × 4.4 mm with 0.65 mm lead pitch and is RoHS-compliant - identical in footprint to other MSP430F21x1 variants like MSP430F2111IPW but rated for -40°C to +105°C operation.

How does the brownout detector function in the MSP430F2111TDWR?

The brownout detector in the MSP430F2111TDWR monitors VCC and asserts a reset when supply voltage falls below a threshold (~1.3 V typical), preventing unreliable operation or flash memory corruption. It is enabled by default after power-on and cannot be disabled - ensuring robust behavior during battery discharge or transient supply dips in MSP430F2111TDWR-based systems.

Can the MSP430F2111TDWR be programmed without a JTAG interface?

Yes, the MSP430F2111TDWR supports in-system programming via its built-in bootstrap loader (BSL), accessible through UART using P1.1 (RX) and P2.2 (TX). The BSL is protected by a user-defined password and can be disabled via security key at address 0xFFDE - enabling field firmware updates without JTAG hardware on deployed MSP430F2111TDWR units.